For information, I push a patch on http://bugzilla.gnome.org/show_bug.cgi?id=329922. it seems to correct the bug but need to confirm with the maintainer.
** Bug 38541 has been marked a duplicate of this bug ** Attachment added: "The Fix" http://librarian.launchpad.net/2617548/329922.patch -- duplicated input device entries in sound recorder https://launchpad.net/bugs/42022 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
